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Finding the Fourth Proportional to 672,485.21, 928,001.66 and 366,554.86

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Solution

The fourth proportional to 672,485.21, 928,001.66 and 366,554.86 is: 505,830.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,485.21 : 928,001.66 = 366,554.86 : x
  2. Step 2: Convert to fraction form
    672,485.21/928,001.66 = 366,554.86/x
  3. Step 3: Cross multiply
    672,485.21x = 928,001.66 × 366,554.86
  4. Step 4: Simplify right side
    672,485.21x = 340,163,513,921.06
  5. Step 5: Solve for x
    x = 340,163,513,921.06/672,485.21
  6. Step 6: Final answer
    x = 505,830.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.